判断进程结束和多进程问题
我在vb程序中调用shell函数，执行.bat批处理文件
现在知道利用API 可以判断一个进程是否结束，如下
Const SYNCHRONIZE = &H100000
Const INFINITE = &HFFFFFFFF
Private Declare Function OpenProcess Lib "kernel32 " (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function CloseHandle Lib "kernel32 " (ByVal hObject As Long) As Long
Private Declare Function WaitForSingleObject Lib "kernel32 " (ByVal hHandle As Long, ByVal dwMilliseconds As Long) As Long
但是调用了WaitForSingleObject后，vb中的其他程序都不能运行了，我可以同时判断进程是否结束，同时也能在vb中做其他操作呢？
我不知道这个是不是和多进程有关，请高手指点一下吧
[解决办法]
WaitForSingleObject本来就是是阻塞的
只有当其返回时才会接着执行下面语句
用多线程可以解决
DoEvent
[解决办法]
你为什么不用Shell来调用外部应用程序呢，
然后在定时器中用“GetExitCodeProcess”api来检测调用的外部应用程序（就是cmd.exe）是否结束了运行。
示例如下
Private Declare Function OpenProcess Lib "Kernel32 " (ByVal dwDesiredAccess _
As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function TerminateProcess Lib "Kernel32 " _
(ByVal hProcess As Long, ByVal uExitCode As Long) As Long
Private Declare Function GetExitCodeProcess Lib "Kernel32 " _
(ByVal hProcess As Long, lpExitcode As Long) As Long
Private Declare Function CloseHandle Lib "Kernel32 " (ByVal hobject As Long) As Long
Private RetProcess As Double
Private Const PROCESS_QUERY_INFORMATION = &H400
Private Const STATUS_PENDING = &H103&
Private hProcess As Long, Exitcode As Long
RetProcess = Shell( "cmd.exe d:\user.bat ", vbNormalFocus)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, False, RetProcess)
'用定时器检测进程是否退出
Private Sub TimerProcess_Timer()
TimerProcess.Enabled = False
Call GetExitCodeProcess(hProcess, Exitcode)
If Exitcode <> STATUS_PENDING Then
'进程已关闭
Call CloseHandle(hProcess)
TimerProcess.Enabled = False
Else
'进程未关闭
TimerProcess.Enabled = True
End If
End Sub
[解决办法]
cmd.exe win2k和xp下的命令行控制台,在cmd.exe下运行user.bat
